Prognostic Meteorological Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4
000
FXUS01 KWBC 012047
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
346 PM EST SUN MAR 01 2015

VALID 00Z MON MAR 02 2015 - 00Z WED MAR 04 2015

...SNOW AND FREEZING RAIN EXPECTED TONIGHT FROM PARTS OF OHIO
VALLEY TO THE NORTHEAST...

...HEAVY RAIN POSSIBLE OVER PORTIONS OF THE SOUTHWEST TONIGHT AND
MONDAY...

...HEAVY SNOW POSSIBLE FOR PORTIONS FROM THE HIGHER ELEVATIONS OF
THE SOUTHWEST TO THE CENTRAL ROCKIES TONIGHT AND MONDAY...

...HEAVY SNOW POSSIBLE ACROSS THE UPPER MIDWEST AND GREAT LAKES ON
TUESDAY...


MOISTURE STREAMING NORTHWARD OVER A COLD AIR MASS IN PLACE TODAY
FROM THE OHIO VALLEY TO THE MID-ATLANTIC AND NORTHEAST IS
RESULTING IN WIDESPREAD WINTRY PRECIPITATION -- INCLUDING SNOW,
SLEET, AND FREEZING RAIN. AN UPPER-LEVEL DISTURBANCE WILL CROSS
THE GREAT LAKES TONIGHT AND WILL CAUSE A LOW PRESSURE SYSTEM TO
DEVELOP ALONG A COASTAL FRONT SITUATED NEAR THE MID-ATLANTIC
COASTLINE. AS THIS LOW MOVES NORTHEASTWARD IT WILL BRING THE
POTENTIAL FOR SOME HEAVY SNOW TO SOUTHERN PORTIONS OF NEW ENGLAND
THIS EVENING INTO TONIGHT. THIS ENTIRE SYSTEM WILL MOVE OFFSHORE
MONDAY MORNING BRINGING AN END TO WIDESPREAD WINTRY PRECIPITATION.
SCATTERED SNOW SHOWERS MAY STILL BE POSSIBLE ACROSS NEW ENGLAND
THROUGH MONDAY.

RAIN AND A FEW THUNDERSTORMS ARE ALSO POSSIBLE TONIGHT FROM THE
SOUTHERN PLAINS TO THE TENNESSEE VALLEY. SCATTERED SHOWERS AND
THUNDERSTORMS WILL PERSIST ACROSS THESE AREAS THROUGH MONDAY AND
INTO TUESDAY AS A FRONTAL BOUNDARY BECOMES STATIONARY OVER THE
REGION.

A PACIFIC LOW PRESSURE SYSTEM IS MOVING INTO THE SOUTHWESTERN U.S.
THIS AFTERNOON AND WILL BRING WIDESPREAD PRECIPITATION TO MUCH OF
THE SOUTHWEST THROUGH MONDAY. HEAVY RAIN IS POSSIBLE WESTERN
ARIZONA. AT THE HIGHER ELEVATIONS, PRECIPITATION WILL FALL AS SNOW
-- AND HEAVY SNOW IS POSSIBLE. THE COMBINATION OF RAIN AND
POTENTIALLY HEAVY SNOW WILL SHIFT EASTWARD ON MONDAY, WITH
WIDESPREAD PRECIPITATION POSSIBLE ACROSS MUCH OF THE FOUR CORNERS
REGION, NORTHWARD ACROSS THE CENTRAL ROCKIES.

AS AN UPPER-LEVEL DISTURBANCE AND ASSOCIATED ARCTIC SURFACE FRONT
MOVE SOUTHWARD FROM CANADA INTO THE ROCKIES AND NORTHERN PLAINS
MONDAY INTO MONDAY NIGHT, THE LOW PRESSURE SYSTEM CROSSING THE
ROCKIES WILL EVOLVE INTO A MORE EXPANSIVE SYSTEM ACROSS THE
PLAINS. WIDESPREAD SNOW IS FORECAST TO DEVELOP MONDAY NIGHT ACROSS
THE UPPER MIDWEST AND UPPER GREAT LAKES -- AND HEAVY SNOW IS
POSSIBLE.

PLEASE REFER TO PRODUCTS ISSUED BY THE WPC WINTER WEATHER DESK FOR
SPECIFIC DETAILS ON THE WINTER WINTER WEATHER THREATS ASSOCIATED
WITH THESE SYSTEMS.


RYAN


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
$$




USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.